Cita APA (7th ed.)

Chen, F., Rahimi, K., Haynes, R., Naessens, K., Taylor-Clarke, M., Murray, C., & Armitage, J. (2011). Investigating strategies to improve attendance at screening visits in a randomized trial.

Cita Chicago (17th ed.)

Chen, F., K. Rahimi, R. Haynes, K. Naessens, M. Taylor-Clarke, C. Murray, i J. Armitage. Investigating Strategies to Improve Attendance at Screening Visits in a Randomized Trial. 2011.

Cita MLA (9th ed.)

Chen, F., et al. Investigating Strategies to Improve Attendance at Screening Visits in a Randomized Trial. 2011.